Finding the Fourth Proportional to 22,782.79, 31,442.52 and 13,829.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,782.79 : 31,442.52 = 13,829.59 : x
2. Step 2: Convert to fraction form
   22,782.79/31,442.52 = 13,829.59/x
3. Step 3: Cross multiply
   22,782.79x = 31,442.52 × 13,829.59
4. Step 4: Simplify right side
   22,782.79x = 434,837,160.17
5. Step 5: Solve for x
   x = 434,837,160.17/22,782.79
6. Step 6: Final answer
   x = 19,086.21